12 Oct
2010
12 Oct
'10
12:01 p.m.
Thanks=2C yes a schematic would be great. Can I post it to the web please?
Sure, but _you'll_ have to scan it. I don't own a scanner. And of course
I will have to send it by sanil-mail
I'm sure Tony knows the following=2C included as background.
I didn;t _know_ it, but I am pretty sure I have the 2564 data sheet
somewhere. I certainly have the 2764 one :-)
Here's the adapter I used to read the 2564 in a 2764 programmer:
2564 pins=A0=A0=A0=A0=A0=A0 2764 pins
20 (A11)=A0=A0=A0=A0=A0=A0=A0 23 (A11)
23 (A12)=A0=A0=A0=A0=A0=A0=A0 2 (A12)
2+27(CS1+CS2)=A0=A0 22 (OE)
1 (Vpp)=A0=A0=A0=A0=A0=A0=A0=A0 28 (Vcc)
22 (PD/PGM)=A0=A0=A0=A0 20 (CE)
(NC)=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 27 (PGM)
All other pins connected straight through. The above can't be always used i=
n the=20
reverse direction (eg using a 2764 in a 2564 socket)=2C as CS1 and CS2 may =
or may not
be tied together depending on the circuit.
Darn!. That may be where I got to before and sort-of gave up. Perhaps I
will have to use a 2564, which means fidning/building a programmer that
can handle them.
-tony